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identity_select.php
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identity_select.php
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<?php
/**
* Identity selection based on additional message headers.
*
* On reply to a message user identity selection is based on
* content of standard headers i.e. From, To, Cc and Return-Path.
* Here you can add header(s) set by your SMTP server (e.g.
* Delivered-To, Envelope-To, X-Envelope-To, X-RCPT-TO) to make
* identity selection more accurate.
*
* Enable the plugin in config.inc.php and add your desired headers:
* $config['identity_select_headers'] = array('Delivered-To');
*
* Note: 'Received' header is also supported, but has bigger impact
* on performance, as it's body is potentially much bigger
* than other headers used by Roundcube
*
* @author Aleksander Machniak <alec@alec.pl>
* @license GNU GPLv3+
*/
class identity_select extends rcube_plugin
{
public $task = 'mail';
function init()
{
$this->add_hook('identity_select', array($this, 'select'));
$this->add_hook('storage_init', array($this, 'storage_init'));
}
/**
* Adds additional headers to supported headers list
*/
function storage_init($p)
{
$rcmail = rcmail::get_instance();
if ($add_headers = (array)$rcmail->config->get('identity_select_headers', array())) {
$p['fetch_headers'] = trim($p['fetch_headers'] . ' ' . strtoupper(join(' ', $add_headers)));
}
return $p;
}
/**
* Identity selection
*/
function select($p)
{
if ($p['selected'] !== null || !is_object($p['message']->headers)) {
return $p;
}
$rcmail = rcmail::get_instance();
foreach ((array)$rcmail->config->get('identity_select_headers', array()) as $header) {
if ($emails = $this->get_email_from_header($p['message'], $header)) {
foreach ($p['identities'] as $idx => $ident) {
if (in_array($ident['email_ascii'], $emails)) {
$p['selected'] = $idx;
break 2;
}
}
}
}
return $p;
}
/**
* Extract email address from specified message header
*/
protected function get_email_from_header($message, $header)
{
$value = $message->headers->get($header, false);
if (strtolower($header) == 'received') {
// find first email address in all Received headers
$email = null;
foreach ((array) $value as $entry) {
if (preg_match('/[\s\t]+for[\s\t]+<([^>]+)>/', $entry, $matches)) {
$email = $matches[1];
break;
}
}
$value = $email;
}
return (array) $value;
}
}

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